Selecting "Format All + Download" in SP Flash Tool erases the NVRAM partition where IMEI data lives.
These tutorials provide visual demonstrations of both Engineer Mode commands and PC-based repair tools for MT6580 devices: mt6580 imei repair code
This method bypasses the dialer's graphical interface and often works when the code does not. Selecting "Format All + Download" in SP Flash
In most countries (USA, UK, EU, India, etc.), changing an IMEI number is unless: SP Flash Tool
Lost your IMEI on an MT6580 device? Don’t panic. This guide covers secret codes (Eng Mode), SP Flash Tool, Maui META, and SN Writer to restore your network.